package com.xl.juc.queue;

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;

/**
 * 同步队列 ：没有容量 一进一出
 * 和其他blockingQueue 不一样，SynchronousQueue不存储元素
 * put了一个元素，必须从里面先take取出来，否则不能再put进去值！
 * @author Charley
 * @create 2021-01-24
 */
public class SynchronousQueueDemo {
    public static void main(String[] args) {
        BlockingQueue<String> synchronousQueue = new SynchronousQueue<>();
        //写入
        new Thread(()->{
            try {
                System.out.println(Thread.currentThread().getName()+"put 1");
                synchronousQueue.put("1");
                System.out.println(Thread.currentThread().getName()+"put 2");
                synchronousQueue.put("2");
                System.out.println(Thread.currentThread().getName()+"put 3");
                synchronousQueue.put("3");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        },"T1").start();
        //取出
        new Thread(()->{
            try {
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+"take 1");
                synchronousQueue.take();
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+"take 2");
                synchronousQueue.take();
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+"take 3");
                synchronousQueue.take();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        },"T2").start();

    }
}
